Castlewood State Park

St. Louis County, St. Louis

Address: 1401 Kiefer Creek Rd, Ballwin, MO 63021

Wikipedia entry

“Quick AnswerThe best outdoor things to do in St. Louis range from 1,300-acre Forest Park — free, endlessly walkable, and better than its reputation — to river bluff hikes at Castlewood State Park and the 240-mile Katy Trail accessible from St. Charles. Confluence Point, Tower Grove Park, and Creve Coeur Lake round out the metro options, while the Ozark foothills within an hour's drive add serious elevation change. This guide covers what each destination is actually like on the trail, organized from the city's core outward.”

In the magazine

• Outdoor Things to Do in St. Louis (2026)